Test Developers Can Easily Find the Difficulty of an Item

Multiple Choice

Test developers can easily find the difficulty of an item by ______.

A) looking at how steep the item characteristic curve is
B) locating the point at which the item characteristic curve indicates a probability of .5 of answering correctly.
C) subtracting the percentage of low performers who responded correctly from the percentage of high performers who responded correctly
D) asking test takers to complete a qualitative item analysis survey on item difficulty